Ditch former



June 30, 1925.

W. J OH NSON DITCH FORMER Filed June 14, 1923 Patented June 30, 1925.

UNITED STATES PATENT 'OFFI CE.

WILLIAM JOHNSON, OF ONTARIO, OREGON.

DITCH FORMER.

Application filed June 14, 1923.

To all whom it may concern:

Be it known that WILLIAM JOHNSON, a. citizen or the United States ofAmerica, residing at Ontario, in the county of Malheur and State ofOregon, has invented new and useful Improvements in Ditch consists in aconstruction and combination of parts of which a preferred embodiment isshown in the accompanying drawings, wherein Figure 1 is a plan viewshowing the application of the invention.

Figure 2 is an enlarged detail plan view of the invention per se.

Figure 8 is. a transverse sectional view of the structure of Figure 2.

Figures 4-, 5 and 6 are detail views of different forms of teeth withwhich the device may be provided.

Essentially the invention comprises a plurality of spurred or toothedrings 1 arranged in axial alignment but spaced apart and assembled in aunitary structure by means of bars 2 which are arranged at uniformangular distances upon the rings and against the inner peripheries ofthe latter, being secured by bolts 3 or other suitable fastening means.

Draft bars i of angular form span diametrically opposite bars 3 at oneend of the structure and where the bars 4. cross each other at theapeXes of the angles which is at the axis of the device, an eyebolt 5 issecured to the bars 4 and carries a ring 6 to Serial N'o. 645,339.

which the draft gear 7, indicated in Figure 1 may be attached, the draftgear being of a character to permit the attachment of teams to the sameto traverse opposite sides of the ditch.

The rings are provided with radial teeth 7 which may be in the formshown at 7* in Figure 4:

or in the form shown at 7' in Figure 5 or in the form shown at 7 ofFigure 6, the teeth being provided with shanks 8 having threadedextremities for the reception of nuts 9 by which they'are secured to thering.

The shanks 8 of the tooth 7 constituting bolts inserted through theteeth but adapted to receive a nut 9 as is the shank 8 of the tooth 7the shanks 8 of the tooth 7 are designed for attachment in two adjacentrings, the teeth being preferably of spiral form, so that the teeth 7will span adjacent rings.

In the operation of the invention it is intended that the ditch to beoperated upon by the invention shall be uniformly formed in anyconventional manner after which a stream of water is caused to flowthrough the latter.

The device is then disposed in the ditch and by means of suitable teamsdrawn forward, the water flowing the while, when the teeth cut away thesides and bottom and thuseffect the desired widening and I deepening ofthe ditch.

Having described the invention, what is claimed as new and useful is Aditch former comprising a plurality of rings, radial teeth secured to.said rings, longitudinal bars s anning the rings and secured thereto anmaintaining them in axial alignment, annular draft bars con nected withdiametrically opposite longitudinal bars and crossing each other at theaxes of the rings, and a draft ring secured to the draft ture.

bars at the point of crossing.

In testimony whereof he aflixes his signa- WILLIAM JOHNSON.

